St Catharine's College John Ray Society. 2019-10-17 18:00: Sir Harry Bhadeshia: The First Bulk–Nanostructured Metal (Sir Harry Bhadeshia, Department of Materials Science and Metallurgy, Cambridge) 2019-11-06 19:15: Absolute Zero: meeting the UK’s legal commitment to zero emissions in 30 years time (Professor Julian Allwood) 2019-11-12 19:00: Sir Richard Friend: Interconversion of light and electricity in molecular semiconductors (Sir Richard Friend, Cavendish Laboratory ) 2020-03-12 18:00: Sir Venki Ramakrishnan - My adventures around the ribosome (Sir Venki Ramakrishnan, President of the Royal Society, Nobel laureate (2009, Chemistry))